US11844852B2ActiveUtilityA1

Skincare product and method of preparation thereof

Assignee: FE I BEAUTY TECH INCPriority: Feb 23, 2012Filed: Oct 2, 2020Granted: Dec 19, 2023
Est. expiryFeb 23, 2032(~5.6 yrs left)· nominal 20-yr term from priority
Inventors:Xi Huang
A61K 8/24A61K 8/25A61K 8/671A61K 8/676A61K 8/678A61Q 19/08A61K 2800/60A61K 8/67A61K 8/64A61K 8/19A61K 8/0241A61K 2800/412
48
PatentIndex Score
0
Cited by
10
References
15
Claims

Abstract

The core active components of the present composition, termed as de-ironizing inducers (DII), has a reducing agent and a precipitating agent. Molar ratios of the reducing agent with the precipitating agent range from 1:3-6 and the core components in the skincare product range from 0.1% to 10% w/w. The pH value of the skincare product is between 6.6 and 7.4. The skin care products can safely and effectively 5 remove iron in the skin, which has been shown to accelerate the visible signs of aging. The core components can also be used in combination with conventional skincare product compounds to achieve better anti-aging effects.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A skincare product comprising:
 a reducing agent selected from vitamin C, vitamin E, glutathione, vitamin A, vitamin D, and their derivatives; and 
 a precipitating agent selected from calcium carbonate, pearl powder, magnesium carbonate, barium carbonate, calcium phosphate, magnesium phosphate, barium phosphate, calcium silicate, calcium molybdate, calcium tungstate, magnesium silicate, magnesium selenite, barium oxalate, barium molybdate, barium manganate, barium selenate, beryllium carbonate, beryllium phosphate, beryllium silicate, strontium carbonate, strontium phosphate, strontium silicate, strontium molybdate, strontium tungstate, strontium selenate, and barium silicate, 
 wherein a molar ratio of the reducing agent to the precipitating agent is in a range of 1:3 to 1:6, 
 wherein the reducing agent and the precipitating agent together represent 0.1% to 0.5% w/w of the skincare product; and 
 wherein a pH of the skincare product is in a range of 5 to 8. 
 
     
     
       2. The skincare product according to  claim 1 , wherein the molar ratio of the reducing agent to the precipitating agent is 1:5. 
     
     
       3. The skincare product according to  claim 1 , wherein the pH of the skin care product is 7. 
     
     
       4. The skincare product according to  claim 1 , wherein a particle diameter of the precipitating agent is about 0.3 micron to about 1 micron. 
     
     
       5. The skin care product of  claim 1 , wherein the reducing agent is vitamin C. 
     
     
       6. The skincare product of  claim 5 , wherein the precipitating agent is calcium carbonate. 
     
     
       7. The skincare product of  claim 1 , wherein the precipitating agent is calcium carbonate. 
     
     
       8. The skin care product of  claim 1 , wherein the skin care products is made by:
 a) grinding the precipitating agent to a particle size of 1 to 5 microns; 
 b) suspending the particles of the precipitating agent in deionized and nitrogen-saturated water; 
 c) adding the reducing agent into the suspension of the precipitating agent, 
 wherein the reducing agent is added to precipitating agent such that a molar ratio 
 of the reducing agent to the precipitating agent is in the range of 1:3 to 1:6; and 
 d) adjusting the pH of the skincare product to about 5 to 8, wherein the reducing agent and the precipitating agent together represent 0.1% to 0.5% (w/w) of the skincare product. 
 
     
     
       9. The skincare product of  claim 8 , wherein the precipitating agent is calcium carbonate. 
     
     
       10. The skincare product of  claim 8 , wherein the reducing agent is vitamin C. 
     
     
       11. The skincare product of  claim 10 , wherein the precipitating agent is calcium carbonate. 
     
     
       12. A method to prepare the skincare product according to  claim 1 , comprising the steps of:
 a.) grinding the precipitating agent to a particle size of 1 to 5 microns; 
 b) suspending the particles of the precipitating agent in deionized and nitrogen-saturated water; 
 c) adding the reducing agent into the suspension of the precipitating agent, 
 wherein the reducing agent is added to precipitating agent such that a molar ratio of the reducing agent to the precipitating agent is in the range of 1:3 to 1:6; and 
 d) adjusting a pH of the skincare product to about 5 to 8. 
 
     
     
       13. The method according to  claim 12 , wherein the particle size in step a) is 1 to 3 micron. 
     
     
       14. The method according to  claim 12 , further comprising the step of: stirring the precipitating agent in step b) at a speed of 200 to 500 rotations per minute. 
     
     
       15. The method according to  claim 12 , wherein pH is 7.

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